import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JFrame;

public class DemoPanel extends JFrame {
  public DemoPanel() {
    super("Snake");
    this.addKeyListener(new KeyAdapter(){
      public void keyPressed(KeyEvent e) {
        sp.keyInput(e.getKeyChar());
      }
    });
    getContentPane().add(sp);
    setBounds(100, 100, 500, 400);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setVisible(true);
  }

  SnakePanel sp = new SnakePanel();

  public static void main(String[] a) {
    new DemoPanel();
  }
}